Improvement in machines for bending sheet metal



TINTTED STATES PATENT OEETCE.

VILLIAM WEBSTER, OF MORRISANIA, NFV YORK.

IMPROVEMENT IN4 MACHINES FOR BENDING SHEET METAL.

Specification forming part of Letters Patent No. 10,7 E3, dated March 2S, 1854.

To al?, whom, t nu@ concern:

Be it known thatI, WM. VEBsTER, of Morrisania, in the county of Vestchester and State of New York, `have invented a new anduseful Machine for Rolling up or Making Sheet Metal Tubing, Ste.; and I do hereby declare that the following is a clear and exact description or" the same, reference being had to the accompanying drawings, making part of vthis specification, in which- Figurel is a front View of the machine.

p Figs. 2 and 3 are end views of a hollow cylinmay be 4used on the outside of the cylinder for the purpose of making large tubes.

The following is a full description of the n1achine and mandrel.

A is the frame.

B is a hollow and non-axled cylinder .having eogs on the end, and resting and revolv ing on friction-rollers a a a.

G and D are two rollers working inV boxes and passing through the cylinder. The roller D may have a crank, b, or pulley o attached. The boxes in which the axles of C and D work are secured by set-screws or their equivalent.`

E is -a mandrel, which is covered with metal, with the edge left so that the sheet d can be pressed under it a little. l

e and f are two cog-wheels combining the roller and cylinder.

F is the weight bearing down the lever G, which is attached to the cross-bar H. (Shown in Fig. l.) H in Fig. 2 represents the fulcruin of lever G, which works in the two rods 7L h at g g, Fig. l, and g, Fig. 2.

I is a treadle, which raises and lowers the roller e. y

J J are set-screws, which secure the boxes K K K, as shown in Fig. 2. The groove or out on the outside of the cylinder, (may be round instead of a sharp cut,) into which some of the,i'rictionrollers work, is also used for the reception of wire to be rolled in edging metal.-

The following is the operation of the machine and mandrel: lVhen motion is given to the roller D and cylinder, the sheet is drawn in between the roller D and mandrel, then between the cylinder and'mandrel, which will cause the sheet to be smoothly formed to the oii" the treadle, and the roller C will again be brought against the mandrel, 82e.

In making large tubingIpropose removing the rollers C and D from the inside of the cylinder and use them on the outside, in which ease the top friction-rollers, a, a, must be taken off. The" boxes of the roller D (the cog-wheel e working the cylinder) are made beveling, so

that by turning back the screws J J the boXts in which the roller works can be adjusted and the tube slipped oii". rIhe size of tubes are varied by the roller G being brought against the sheet L by turning up the screws K K in Fig. l, and as shown by onescrew K in Fig. 2.

Vhat I claim as my invention, and desire to secure by Letters Patent, is

The non-axled cylinder as arranged in relation to the rollers Iand mandrel, whereby I am enabled readily to adapt ,it to rolling and bending sheet metal, as described.

WM. wEEs'rEn.

Witnesses: l

J or-IN Jonsson, JOHN Cox. 

